{ stdenv, lib, fetchurl, libpcap, nixosTests }: stdenv.mkDerivation rec { pname = "ucarp"; version = "1.5.2"; src = fetchurl { url = "https://download.pureftpd.org/pub/ucarp/ucarp-${version}.tar.bz2"; sha256 = "0qidz5sr55nxlmnl8kcbjsrff2j97b44h9l1dmhvvjl46iji7q7j"; }; buildInputs = [ libpcap ]; # Workaround build failure on -fno-common toolchains like upstream # gcc-10. Otherwise build fails as: # ld: daemonize.o:/build/ucarp-1.5.2/src/ip_carp.h:73: multiple definition of # `__packed'; ucarp.o:/build/ucarp-1.5.2/src/ip_carp.h:73: first defined here env.NIX_CFLAGS_COMPILE = "-fcommon"; passthru.tests = { inherit (nixosTests) ucarp; }; meta = with lib; { description = "Userspace implementation of CARP"; longDescription = '' UCARP allows a couple of hosts to share common virtual IP addresses in order to provide automatic failover. It is a portable userland implementation of the secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD's alternative to the patents-bloated VRRP). Warning: This package has not received any upstream updates for a long time and can be considered as unmaintained. ''; license = with licenses; [ isc bsdOriginal bsd2 gpl2Plus ]; maintainers = with maintainers; [ oxzi ]; mainProgram = "ucarp"; }; }